Knife-cleaning machine.



PATENTED SEPT. 26, 1905.

M. 'WALLRATH. KNIFE CLEANING MACHINE.

APPLICATION FILED FEB. 21. 1905.

ill'omwgp ANDREW, a. GRAHAM c0. Mmmumucmvnzns, mwmcwn. n. cy

UNITED STATES PATENT OFFICE.

MICHAEL WALIJR'ALTH, OF DUISBURG, GERMANY.

KN-IFE-CL'EAN ING "MACHINE.

Specification of Letters Patent.

Patented'Sept. 26, 1905.

Application filed February 21,1905. Serial No. 24 ,743.

To all whom it may concern.-

and more particularly to that type wherein. means is provided for frictionally engaging a knife-blade to cleanse it of any substances or stains that may appear upon said blade.

The object of this invention is to provide a novel form of machine which can be manually operated to cleanseaknife-blade placed in said machine, and I employ novel means for securing the machine to a suitable table or shelf.

Briefly described, my improved machine comprises a clamping-bracket, and in the upper end of the bracket are rotatably mounted disks which are rotated by a suitable crankhandle. These disks are preferably made of felt which is compressed to have sufficient rigidity to withstand revoluble motion of said disks, and these disks are lined with leather, which is employed for cleansing the sides of the knife-blade. When the knives have been cleansed between the disks, the blades thereof can be held against the felt portions of said disks to polish the same.

The above construction will be hereinafter more fully described and then specifically pointed out in the claims, and, referring to the drawings accompanying this application, like numerals of reference designate corresponding parts throughout the several views, in which Figure 1 is a side elevation of my improve machine. Fig. 2 is an edge view thereof, and

, Fig. 3 is a top plan view of a machine constructed in accordance with my invention.

In the accompanying drawings I have illustrated the preferred manner of constructing my improved machine, and the framework of my improved machine consists of a standard 1, having clamping-jaws 2 and 3, which areadapted to span the edge of a table or shelf to which it is desired to secure my improved machine. A set-screw 4 is mounted in the'clamping-jaw 3, and this set-screw is adapted to engage the under face of the table or shelf upon which the machineis secured. The upper end of the standard is provided with a boss 5, havmg outwardly-extending arms 6 6, the ends of which-are bent at right angles,-as indicated at The reference-numeral 8 designates a shaft which is mounted in the boss 5', and to the one end of the shaft is attached a crank-handle 9, while the other end thereof is provided With'an adjustable thumb-screw 10. Upon the shaft 8 are mounted disks l1 and 12, the

disk 12 being retained by a washer 14:, and the disk 11 is adjusted upon the shaft by'the thumb-screw 10. These disks are preferably made of felt compressed sufficiently to withstand the revoluble motion. that is imparted v to them by the crank 9, and theyhave their confronting faces lined with disks of leather 15, this material being used to remove stains and substances that may adhere to the faces of a knife-blade. To cleanse a knife-blade, the same is placed between the disks, as illustrated in Fig. 1 of the drawings, and by rotating the crank the revolving faces of the leather-lined disks will frictionally engage the knife-blade, remove stains, and thoroughly cleanse the knife-blade. After the blade has been cleansed it can be easily removed and held against the felt portion of the disks until its surface has become polished. The inwardly-extending arms 7 7 form a rest for the knife during the cleansing operation, and by employing an arm upon each side of the disk these arms serve as a guard and also permit of the machine being operated by either hand of the operator during the operation of cleansing a knife-blade.

In connection with the disks 11 and 12 I may employ a suitable powder, such as emerypowder or the-like, for scouring or cleansing the surface of the knife-blade.

' While I have herein illustrated the preferred manner of constructing my improved machine, it is obvious that I may employ a suitable framework for supporting the disks and may use other means than manual power for driving the machine, and other changes may be made in.the details of construction without departing from the general spirit and scope of the invention.

What I claim, and desire to secure by Letters Patent, is- Y 1. In a machine of the type described, a supporting-standard terminatingat its upper end in a bearing, arms extending from opposite sides of said bearing and having their free ends bent at right angles, a shaft rotatably mounted in the bearing and having a crank connected to one end, a pair of disks mounted on said shaft to revolve therewith, and means on the other end of said shaft for securing said disks thereon, substantially as described.

2. In a machine of the type described, the combination with a support terminating at its upper end in a bearing, a shaft journaled in said bearing, a crank connected to one end of said shaft, a pair of disks composed of flexible material each having a facing of different material, and mounted on said shaft to revolve therewith, means for securing the disks to the shaft, and supporting-arms extending from opposite sides of the bearing and having angular ends lying in front of the opposite sides of the perimeter of the disks, substantially as described.

In testimony whereof I afiix my signature in the presence of two witnesses.

MICHAEL WALLRATH.

Witnesses:

PETER LIEBER, WILLIAM ESSENWEIN. 

